EATON SPCT2-335-3+NPE Type 2 Surge Protective Device, 3-Phase + Neutral + PE, 335 V AC, 40 kA Imax, DIN Rail 167622

With a maximum discharge current of 40 kA per pole and a voltage protection level below 1.5 kV, the EATON SPCT2-335-3+NPE provides robust protection for three-phase power systems with neutral and protective earth. This Type 2 surge protective device is engineered for DIN rail mounting and features a high-energy varistor design for reliable transient overvoltage suppression.

Overview

The SPCT2-335-3+NPE is a 3+NPE configuration surge arrester designed for installation at the main distribution board. It offers a nominal discharge current of 20 kA per pole and a maximum continuous operating voltage of 335 V AC between live conductors and PE, and 255 V AC between neutral and PE. The device is compliant with IEC/EN 61643-11 and provides a visual status indicator for quick health checks.

What stands out

• High-energy varistor technology with 40 kA Imax per pole
• Fast response time under 25 ns
• Compact 4-module width (72 mm) for space-efficient installation
• Wide operating temperature range from -40 °C to +80 °C
• Flame-retardant thermoplastic housing

Technical details

• SPD type: Type 2 (T2)
• Configuration: 3+NPE
• Nominal voltage (Un): 230/400 V AC
• Maximum continuous operating voltage (Uc) L-N/L-PE: 335 V AC
• Maximum continuous operating voltage (Uc) N-PE: 255 V AC
• Nominal discharge current (In) (8/20 µs): 20 kA per pole
• Maximum discharge current (Imax) (8/20 µs): 40 kA per pole
• Voltage protection level (Up) L-N/L-PE: < 1.5 kV
• Voltage protection level (Up) N-PE: < 1.5 kV
• Short-circuit withstand capability (Isccr): 50 kA with suitable upstream fuse
• Response time: < 25 ns
• Mounting: DIN rail 35 mm
• Module width: 4 TE (72 mm)
• Operating temperature: -40 °C to +80 °C
• Degree of protection: IP20
• Standards: IEC/EN 61643-11
• Visual status indicator: green/red flag
• Technology: high-energy varistor (MOV)
• Housing material: thermoplastic, flame retardant
• Max. backup fuse: 125 A gG

Our verdict

The EATON SPCT2-335-3+NPE is a reliable Type 2 surge protective device for three-phase installations, combining high discharge capacity, fast response, and a clear status indicator in a compact DIN rail format.